Adolph deleescamp



(Model.)

A. DELKESGAMP.

BYBLET.

No. 249,593. Patented Nov.1\5,1881.

UNITED STATES PATENT OFFICE.

ADOIIPH DELKESCAMP, QF WATERBURY, CONNECTICUT, ASSIGNOR TO THE BENEDICTSD BURNHAM MANUFACTURING COMPANY, 0F SAME PLACE.

EY ELET.

SPECIFICATION forming part of Letters Patent No. 249,593, dated November 15, 1881. ,L Application filed July 14,188.1. (Model.)

To all 'whom tft may concern:

Be it known that I, ADoLPII DELKEscAMP, of Waterbury, in the county ot' New Haven and State of Connecticut,have invented a new Improvement in Eyelets; and I do hereby declare the following, when taken in connection This invention relates to an improvementin eyelets such as are used forA corsets, shoes, other articles of wearing-apparel, and for purposes where the bushing ofaperforation is desirable, or to secure several thicknesses of paper, and like purposes.

ln the usual construction of eyelets they are first made of cup shape, as seen in Fig. 3, with a ange projecting atthe open end, then the closed end punched out, and so that when introduced through the perforations the openv end produced by the punching is turned over onto the side opposite the flange. Unless the edge which is to be thus turned is nicked or slit the body of the eyelet is liable to be vertically crushed, so as not to properly turn over onto the reverse side. The vertical or longitudinal slitting at the different points avoids this diiculty; but to cut the nicks or slits involves a serious ditliculty in the manufacture as heretofore produced.

The object of my invention is to produce nicks or angles in the end which is to be upset, whereby the body will split so as to permit that end to be turnedv down in parts or sections onto the side opposite the Ilan ge.

To this end my invention consists in punching the opening through the bottom of the eyelet-cup of polygonal shape, instead of round, whereby angles are defnedat which the body will split when the eyelet-punch is introduced to set the eyelet in place, as more fully hereina-fter described.

A represents the body of the eyelet 5 B, the

flan ge. In the manufacture of the eyele-t it is produced in cup shape, as seen in Fig. 3, in the usual manner, the enda closed. The tnal oper- Y ation upon the eyelet is to punch this closed end, and heretofore this has been done with a round punch. Instead of using the round punch I use one of polygonal shape, preferably hexagonal; butl it may be more or less number ot' sides; but whatever the shape the 6o angles b should be clearly and sharply defined. The size of theipunch forcuttingouttheclosed end is in diameter across the angle (as through z z, Fig. 2) equal to the internal diameter of the cup; but across the sides or between the angles, as from a: to x, Pig. 2, is considerably less diameter than the internal diameter of the cupthat is, the side comes entirely withinthe internal diameter ofthe cup, and so that the side will project inward, as seen in 7o Fig. 5, while at the angles it will be in full diameter, as seen in Fig. 4. This completes the eyelet, ready for market.

In securingtheeyeletitisintroducedthrough theperforation in the usual manner, and the usual setting-punch is employed. It being circular in forni, strikes the center of the straight sides ofthe opening in the eyelet, turns them` outward, and causes the body to split at the angles. The straight sides turning outward 8o and over before the split occurs prevents the metal from erinkling,and the splitting causes it readily to turn over onto the side opposite vthat where the flange rests.

From what has already been stated in the specification it will be understood that I am aware of Patent N o. 62,911.4, July 30, 1866, and 4 that my invention is an improvement on the I construction shown and deseribedin that patent. I do not wish to be understood as claiming 9o anything shown or described in that patent but An eyelethavin g the untlan ged end punched of polygonal shape, the diameter across the angles equal to the internal diameter of the i eyelet, and so that the sides between theau` gles extend into the eyelet, substau tially as described.`

ADOLPH 4DELKESCAMP. Witnesses:

FERDINAND DEMING, E. L. BRONSON. 

